Hey everyone! I'm working with a setup of 15 solar panels, each rated at 460 W, and they're all equipped with Tigo TS4-A-O optimizers. I can't seem to find any technical notes about their connection on the Tigo website, so I'm hoping someone can help me out. I'm wondering if I should connect 14 of the panels in 7 pairs and then add the last one in series, or should I connect 7 panels in series and then connect two strings in parallel before adding the last panel in series? Any advice would be much appreciated!
1 Answer
You can't connect the Tigo optimizers in parallel with two panels. It's better to create two strings of 7 optimizers each, then connect those two strings in parallel. Just make sure the positive terminals from both strings go to the positive inputs of your MPPT, and the same for the negatives! That's the way to go.
In a previous post, you mentioned having an inverter with multiple MPPT inputs, right? If so, it sounds like running all your strings directly to the inverter in series could be the best option, avoiding any parallel connections altogether.